M2/M3 BFV ENGINE STARTING/CHARGING SYS - OD1603 - LESSON 1/TASK 1
COLD START SWITCH LOCATION.
Test Number 90 in step 5 above revealed a generator current draw
greater than 180 amperes.
With the STE-M1 still connected, Test Number 82
(GENERATOR VOLTAGE) should be performed next.
Because the vehicle is being
operated in a temperate (normal) climate, the voltage reading should be 28.6 .3
Test Number 82 revealed a voltage reading of 28.6 .3 volts. Move the
ENGINE ACCESSORY switch (3)(figure 1 on page 8) to the OFF position.
accessory switch was turned off, the STE-M1 shows a voltage drop reading below 28.6
This voltage drop indicates that the generator voltage regulator
(3)(figure 9 on the following page) is defective and must be replaced.
Disconnect the STE-M1 jack 1A1J14 (7) (figure 1, page 8) of the vehicle
distribution box (5), and replace the generator voltage regulator.
voltage regulator should be replaced as described in the following subparagraph.